So, he was not even in the films at all then. He did finally get a mention in ROTS at least.
Yes, technically he WAS in the films--although at the time he hadn't "become" Vos yet.
The character seen in TPM IS Quinlan Vos. He was originally just a random extra, but the character design was spun off into Vos in the comics. Vos' backstory has always included the TPM appearance, as far back as his debut in
Twilight. It's much like the way Momaw Nadon's backstory was expanded from the "Hammerhead" background character in ANH.